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Beginner

Catalyst 3850 swich stack PoE faulty

Hello,

I have a stack of 6x 3850 PoE capable switches, recently some ports started to fail to give PoE and/or going up/down where PoE devices are connected to, like Cisco Access Points, Digium desk phones, other PoE devices.

I have:

1) changed cabling

2) perform shut / no shut

3) check PoE module is not overloaded

4) set power inline auto / static

5) connected devices to different switch ports on the same switch

6) connected devices to different switch ports on a different switch

7) reboot switch stack

From time to time some ports seems to fail to negotiate PoE and go to faulty state.

This is failing from switch 1,2 oldest to switch 5,6 newest devices added no more than a year ago.

I am having trouble diagnosing where the issue could be

below configuration:

 

 

#show env power all

SW  PID                 Serial#     Status           Sys Pwr  PoE Pwr  Watts

--  ------------------  ----------  ---------------  -------  -------  -----

1A  PWR-C1-350WAC       ART2003F757  OK              Good     Good     350

1B  PWR-C1-715WAC       DCA1949G04Z  OK              Good     Good     715

2A  PWR-C1-350WAC       ART2003F78P  OK              Good     Good     350

2B  PWR-C1-715WAC       DCA1949G052  OK              Good     Good     715

3A  PWR-C1-350WAC       ART2003F72S  OK              Good     Good     350

3B  PWR-C1-715WAC       DCA1949G057  OK              Good     Good     715

4A  PWR-C1-350WAC       LIT17461E6H  OK              Good     Good     350

4B  PWR-C1-715WAC       DCB1910G12V  OK              Good     Good     715

5A  PWR-C1-715WAC       DCA2149G499  OK              Good     Good     715

5B  PWR-C1-715WAC       DCA2149G49K  OK              Good     Good     715

6A  PWR-C1-715WAC       DCA2149G4DT  No Input Power  Bad      Bad      715

 

 

 

#show switch detail

Switch/Stack Mac Address : 042a.e23f.7700 - Local Mac Address

Mac persistency wait time: Indefinite

                                             H/W   Current

Switch#   Role    Mac Address     Priority Version  State

------------------------------------------------------------

*1       Active   042a.e23f.7700     15     V07     Ready               

2       Standby  042a.e23f.7600     14     V07     Ready               

3       Member   042a.e23f.7680     13     V07     Ready               

4       Member   8890.8dd8.6300     12     V04     Ready               

5       Member   00f8.2c9b.9a00     1      V08     Ready               

6       Member   00f8.2c9b.9700     1      V08     Ready               

 

         Stack Port Status             Neighbors     

Switch#  Port 1     Port 2           Port 1   Port 2

--------------------------------------------------------

  1         OK         OK               2        6

  2         OK         OK               3        1

  3         OK         OK               4        2

  4         OK         OK               5        3

  5         OK         OK               6        4

  6         OK         OK               1        5

 

6B  PWR-C1-715WAC       DCA2149G4D2  OK              Good     Good     715

 

#show inventory

NAME: "c38xx Stack", DESCR: "c38xx Stack"

PID: WS-C3850-24P      , VID: V07  , SN: FOC2012U0LV

 

NAME: "Switch 1", DESCR: "WS-C3850-24P-S"

PID: WS-C3850-24P-S    , VID: V07  , SN: FOC2012U0LV

 

NAME: "Switch 1 - Power Supply A", DESCR: "Switch 1 - Power Supply A"

PID: PWR-C1-350WAC     , VID: V01  , SN: ART2003F757

 

NAME: "Switch 1 - Power Supply B", DESCR: "Switch 1 - Power Supply B"

PID: PWR-C1-715WAC     , VID: V01  , SN: DCA1949G04Z

 

NAME: "Switch 1 FRU Uplink Module 1", DESCR: "2x1G 2x10G Uplink Module"

PID: C3850-NM-2-10G    , VID: V01  , SN: FOC20010HPK

 

NAME: "TenGigabitEthernet1/1/4", DESCR: "SFP-10GBase-SR"

PID: SFP-10G-SR         , VID: V03  , SN: JUR2004GFHW    

 

NAME: "Switch 2", DESCR: "WS-C3850-24P-S"

PID: WS-C3850-24P-S    , VID: V07  , SN: FCW2012C0L6

 

NAME: "Switch 2 - Power Supply A", DESCR: "Switch 2 - Power Supply A"

PID: PWR-C1-350WAC     , VID: V01  , SN: ART2003F78P

 

NAME: "Switch 2 - Power Supply B", DESCR: "Switch 2 - Power Supply B"

PID: PWR-C1-715WAC     , VID: V01  , SN: DCA1949G052

 

NAME: "Switch 2 FRU Uplink Module 1", DESCR: "2x1G 2x10G Uplink Module"

PID: C3850-NM-2-10G    , VID: V01  , SN: FOC20010HMB

 

NAME: "TenGigabitEthernet2/1/4", DESCR: "SFP-10GBase-SR"

PID: SFP-10G-SR         , VID: V03  , SN: JUR2007G1DH    

 

NAME: "Switch 3", DESCR: "WS-C3850-24P-S"

PID: WS-C3850-24P-S    , VID: V07  , SN: FOC2012U0LW

 

NAME: "Switch 3 - Power Supply A", DESCR: "Switch 3 - Power Supply A"

PID: PWR-C1-350WAC     , VID: V01  , SN: ART2003F72S

 

NAME: "Switch 3 - Power Supply B", DESCR: "Switch 3 - Power Supply B"

PID: PWR-C1-715WAC     , VID: V01  , SN: DCA1949G057

 

NAME: "Switch 4", DESCR: "WS-C3850-24T-S"

PID: WS-C3850-24T-S    , VID: V04  , SN: FOC1823U10S

 

NAME: "Switch 4 - Power Supply A", DESCR: "Switch 4 - Power Supply A"

PID: PWR-C1-350WAC     , VID: V01  , SN: LIT17461E6H

 

NAME: "Switch 4 - Power Supply B", DESCR: "Switch 4 - Power Supply B"

PID: PWR-C1-715WAC     , VID: V01  , SN: DCB1910G12V

 

NAME: "Switch 5", DESCR: "WS-C3850-24P-S"

PID: WS-C3850-24P-S    , VID: V08  , SN: FCW2204C0VC

          

NAME: "Switch 5 - Power Supply A", DESCR: "Switch 5 - Power Supply A"

PID: PWR-C1-715WAC     , VID: V02  , SN: DCA2149G499

 

NAME: "Switch 5 - Power Supply B", DESCR: "Switch 5 - Power Supply B"

PID: PWR-C1-715WAC     , VID: V02  , SN: DCA2149G49K

 

NAME: "Switch 6", DESCR: "WS-C3850-24P-S"

PID: WS-C3850-24P-S    , VID: V08  , SN: FCW2204C0V2

 

NAME: "Switch 6 - Power Supply A", DESCR: "Switch 6 - Power Supply A"

PID: PWR-C1-715WAC     , VID: V02  , SN: DCA2149G4DT

 

NAME: "Switch 6 - Power Supply B", DESCR: "Switch 6 - Power Supply B"

PID: PWR-C1-715WAC     , VID: V02  , SN: DCA2149G4D2

 

 

#show power inline

 

Module   Available     Used     Remaining

          (Watts)     (Watts)    (Watts)

------   ---------   --------   ---------

1           720.0        0.0       720.0

Interface Admin  Oper       Power   Device              Class Max

                            (Watts)                            

--------- ------ ---------- ------- ------------------- ----- ----

Gi1/0/1   auto   off        0.0     n/a                 n/a   30.0

Gi1/0/2   auto   faulty     0.0     n/a                 n/a   30.0

Gi1/0/3   auto   off        0.0     n/a                 n/a   30.0

Gi1/0/4   off    off        0.0     n/a                 n/a   30.0

Gi1/0/5   auto   faulty     0.0     n/a                 n/a   30.0

Gi1/0/6   auto   off        0.0     n/a                 n/a   30.0

Gi1/0/7   auto   faulty     0.0     n/a                 n/a   30.0

Gi1/0/8   auto   off        0.0     n/a                 n/a   30.0

Gi1/0/9   auto   off        0.0     n/a                 n/a   30.0

Gi1/0/10  auto   off        0.0     n/a                 n/a   30.0

Gi1/0/11  auto   off        0.0     n/a                 n/a   30.0

Gi1/0/12  auto   off        0.0     n/a                 n/a   30.0

Gi1/0/13  auto   off        0.0     n/a                 n/a   30.0

Gi1/0/14  auto   off        0.0     n/a                 n/a   30.0

Gi1/0/15  auto   off        0.0     n/a                 n/a   30.0

Gi1/0/16  auto   off        0.0     n/a                 n/a   30.0

Gi1/0/17  auto   off        0.0     n/a                 n/a   30.0

Gi1/0/18  auto   off        0.0     n/a                 n/a   30.0

Gi1/0/19  auto   off        0.0     n/a                 n/a   30.0

Gi1/0/20  auto   off        0.0     n/a                 n/a   30.0

Gi1/0/21  auto   off        0.0     n/a                 n/a   30.0

Gi1/0/22  auto   off        0.0     n/a                 n/a   30.0

Gi1/0/23  auto   off        0.0     n/a                 n/a   30.0

Gi1/0/24  auto   off        0.0     n/a                 n/a   30.0

 

Module   Available     Used     Remaining

          (Watts)     (Watts)    (Watts)

------   ---------   --------   ---------

2           720.0       79.7       640.3

Interface Admin  Oper       Power   Device              Class Max

                            (Watts)                            

--------- ------ ---------- ------- ------------------- ----- ----

Gi2/0/1   auto   off        0.0     n/a                 n/a   30.0

Gi2/0/2   auto   on         3.9     Ieee PD             2     30.0

Gi2/0/3   auto   off        0.0     n/a                 n/a   30.0

Gi2/0/4   auto   off        0.0     n/a                 n/a   30.0

Gi2/0/5   auto   on         3.9     Ieee PD             2     30.0

Gi2/0/6   auto   off        0.0     n/a                 n/a   30.0

Gi2/0/7   auto   on         3.9     Ieee PD             2     30.0

Gi2/0/8   auto   off        0.0     n/a                 n/a   30.0

Gi2/0/9   auto   off        0.0     n/a                 n/a   30.0

Gi2/0/10  auto   off        0.0     n/a                 n/a   30.0

Gi2/0/11  auto   off        0.0     n/a                 n/a   30.0

Gi2/0/12  auto   on         5.8     Ieee PD             2     30.0

Gi2/0/13  auto   off        0.0     n/a                 n/a   30.0

Interface Admin  Oper       Power   Device              Class Max

                            (Watts)                            

--------- ------ ---------- ------- ------------------- ----- ----

Gi2/0/14  auto   faulty     0.0     n/a                 n/a   30.0

Gi2/0/15  static faulty     0.0     n/a                 n/a   30.0

Gi2/0/16  auto   off        0.0     n/a                 n/a   30.0

Gi2/0/17  auto   off        0.0     n/a                 n/a   30.0

Gi2/0/18  auto   off        0.0     n/a                 n/a   30.0

Gi2/0/19  auto   off        0.0     n/a                 n/a   30.0

Gi2/0/20  auto   off        0.0     n/a                 n/a   30.0

Gi2/0/21  auto   on         16.8    AIR-CAP3602I-E-K9   4     30.0

Gi2/0/22  auto   on         15.4    AIR-CAP3602I-E-K9   4     30.0

Gi2/0/23  auto   off        0.0     n/a                 n/a   30.0

Gi2/0/24  auto   off        0.0     n/a                 n/a   30.0

 

Module   Available     Used     Remaining

          (Watts)     (Watts)    (Watts)

------   ---------   --------   ---------

3           720.0       78.3       641.7

Interface Admin  Oper       Power   Device              Class Max

                            (Watts)                            

--------- ------ ---------- ------- ------------------- ----- ----

Gi3/0/1   auto   off        0.0     n/a                 n/a   30.0

Gi3/0/2   auto   off        0.0     n/a                 n/a   30.0

Gi3/0/3   auto   off        0.0     n/a                 n/a   30.0

Gi3/0/4   auto   off        0.0     n/a                 n/a   30.0

Gi3/0/5   auto   off        0.0     n/a                 n/a   30.0

Gi3/0/6   auto   off        0.0     n/a                 n/a   30.0

Gi3/0/7   auto   on         3.9     Ieee PD             2     30.0

Gi3/0/8   auto   off        0.0     n/a                 n/a   30.0

Gi3/0/9   auto   on         3.9     Ieee PD             2     30.0

Gi3/0/10  auto   on         5.8     Ieee PD             2     30.0

Gi3/0/11  auto   on         3.9     Ieee PD             2     30.0

Gi3/0/12  auto   off        0.0     n/a                 n/a   30.0

Gi3/0/13  auto   off        0.0     n/a                 n/a   30.0

Gi3/0/14  auto   off        0.0     n/a                 n/a   30.0

Gi3/0/15  static off        30.0    n/a                 n/a   30.0

Gi3/0/16  auto   off        0.0     n/a                 n/a   30.0

Gi3/0/17  auto   off        0.0     n/a                 n/a   30.0

Gi3/0/18  auto   off        0.0     n/a                 n/a   30.0

Gi3/0/19  auto   off        0.0     n/a                 n/a   30.0

Gi3/0/20  auto   faulty     0.0     n/a                 n/a   30.0

Gi3/0/21  auto   on         15.4    AIR-CAP3602I-E-K9   4     30.0

Gi3/0/22  auto   on         15.4    AIR-CAP3602I-E-K9   4     30.0

Gi3/0/23  auto   faulty     0.0     n/a                 n/a   30.0

Gi3/0/24  auto   off        0.0     n/a                 n/a   30.0

 

Module   Available     Used     Remaining

          (Watts)     (Watts)    (Watts)

------   ---------   --------   ---------

4             n/a        n/a         n/a

Interface Admin  Oper       Power   Device              Class Max

                            (Watts)                            

--------- ------ ---------- ------- ------------------- ----- ----

 

Module   Available     Used     Remaining

Interface Admin  Oper       Power   Device              Class Max

                            (Watts)                            

--------- ------ ---------- ------- ------------------- ----- ----

          (Watts)     (Watts)    (Watts)

------   ---------   --------   ---------

5           720.0       11.7       708.3

Interface Admin  Oper       Power   Device              Class Max

                            (Watts)                            

--------- ------ ---------- ------- ------------------- ----- ----

Gi5/0/1   auto   off        0.0     n/a                 n/a   30.0

Gi5/0/2   auto   off        0.0     n/a                 n/a   30.0

Gi5/0/3   auto   off        0.0     n/a                 n/a   30.0

Gi5/0/4   auto   off        0.0     n/a                 n/a   30.0

Gi5/0/5   auto   off        0.0     n/a                 n/a   30.0

Gi5/0/6   auto   off        0.0     n/a                 n/a   30.0

Gi5/0/7   auto   off        0.0     n/a                 n/a   30.0

Gi5/0/8   auto   off        0.0     n/a                 n/a   30.0

Gi5/0/9   auto   off        0.0     n/a                 n/a   30.0

Gi5/0/10  auto   off        0.0     n/a                 n/a   30.0

Gi5/0/11  auto   off        0.0     n/a                 n/a   30.0

Gi5/0/12  auto   on         3.9     Ieee PD             2     30.0

Gi5/0/13  auto   off        0.0     n/a                 n/a   30.0

Gi5/0/14  auto   on         3.9     Ieee PD             2     30.0

Gi5/0/15  auto   off        0.0     n/a                 n/a   30.0

Gi5/0/16  auto   off        0.0     n/a                 n/a   30.0

Gi5/0/17  auto   off        0.0     n/a                 n/a   30.0

Gi5/0/18  auto   off        0.0     n/a                 n/a   30.0

Gi5/0/19  auto   on         3.9     Ieee PD             2     30.0

Gi5/0/20  auto   off        0.0     n/a                 n/a   30.0

Gi5/0/21  auto   off        0.0     n/a                 n/a   30.0

Gi5/0/22  auto   off        0.0     n/a                 n/a   30.0

Gi5/0/23  auto   off        0.0     n/a                 n/a   30.0

Gi5/0/24  auto   off        0.0     n/a                 n/a   30.0

 

Module   Available     Used     Remaining

          (Watts)     (Watts)    (Watts)

------   ---------   --------   ---------

6           720.0       16.8       703.2

Interface Admin  Oper       Power   Device              Class Max

                            (Watts)                            

--------- ------ ---------- ------- ------------------- ----- ----

Gi6/0/1   auto   off        0.0     n/a                 n/a   30.0

Gi6/0/2   auto   off        0.0     n/a                 n/a   30.0

Gi6/0/3   auto   off        0.0     n/a                 n/a   30.0

Gi6/0/4   auto   off        0.0     n/a                 n/a   30.0

Gi6/0/5   auto   off        0.0     n/a                 n/a   30.0

Gi6/0/6   auto   off        0.0     n/a                 n/a   30.0

Gi6/0/7   auto   off        0.0     n/a                 n/a   30.0

Gi6/0/8   auto   off        0.0     n/a                 n/a   30.0

Gi6/0/9   auto   off        0.0     n/a                 n/a   30.0

Gi6/0/10  auto   faulty     0.0     n/a                 n/a   30.0

Gi6/0/11  auto   off        0.0     n/a                 n/a   30.0

Gi6/0/12  auto   off        0.0     n/a                 n/a   30.0

Gi6/0/13  auto   off        0.0     n/a                 n/a   30.0

Gi6/0/14  auto   off        0.0     n/a                 n/a   30.0

Gi6/0/15  auto   off        0.0     n/a                 n/a   30.0

Interface Admin  Oper       Power   Device              Class Max

                            (Watts)                            

--------- ------ ---------- ------- ------------------- ----- ----

Gi6/0/16  auto   off        0.0     n/a                 n/a   30.0

Gi6/0/17  auto   off        0.0     n/a                 n/a   30.0

Gi6/0/18  auto   off        0.0     n/a                 n/a   30.0

Gi6/0/19  auto   off        0.0     n/a                 n/a   30.0

Gi6/0/20  auto   off        0.0     n/a                 n/a   30.0

Gi6/0/21  auto   off        0.0     n/a                 n/a   30.0

Gi6/0/22  auto   on         16.8    AIR-CAP3602I-E-K9   4     30.0

Gi6/0/23  auto   off        0.0     n/a                 n/a   30.0

Gi6/0/24  auto   off        0.0     n/a                 n/a   30.0

 

 

#show ver           

Cisco IOS Software, IOS-XE Software, Catalyst L3 Switch Software (CAT3K_CAA-UNIVERSALK9-M), Version 03.06.06E RELEASE SOFTWARE (fc1)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2016 by Cisco Systems, Inc.

Compiled Sat 17-Dec-16 00:22 by prod_rel_team

 

 

 

Cisco IOS-XE software, Copyright (c) 2005-2015 by cisco Systems, Inc.

All rights reserved.  Certain components of Cisco IOS-XE software are

licensed under the GNU General Public License ("GPL") Version 2.0.  The

software code licensed under GPL Version 2.0 is free software that comes

with ABSOLUTELY NO WARRANTY.  You can redistribute and/or modify such

GPL code under the terms of GPL Version 2.0.

(http://www.gnu.org/licenses/gpl-2.0.html) For more details, see the

documentation or "License Notice" file accompanying the IOS-XE software,

or the applicable URL provided on the flyer accompanying the IOS-XE

software.

 

 

 

ROM: IOS-XE ROMMON

BOOTLDR: CAT3K_CAA Boot Loader (CAT3K_CAA-HBOOT-M) Version 3.58, RELEASE SOFTWARE (P)

 

LLSASW01 uptime is 4 weeks, 1 hour, 59 minutes

Uptime for this control processor is 4 weeks, 2 hours, 6 minutes

System returned to ROM by reload at 07:20:26 GMT Tue Jan 29 2019

System restarted at 07:29:13 GMT Tue Jan 29 2019

System image file is "flash:packages.conf"

Last reload reason: Reload command

 

 

 

This product contains cryptographic features and is subject to United

States and local country laws governing import, export, transfer and

use. Delivery of Cisco cryptographic products does not imply

third-party authority to import, export, distribute or use encryption.

Importers, exporters, distributors and users are responsible for

compliance with U.S. and local country laws. By using this product you

agree to comply with applicable laws and regulations. If you are unable

to comply with U.S. and local laws, return this product immediately.

 

A summary of U.S. laws governing Cisco cryptographic products may be found at:

http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

 

If you require further assistance please contact us by sending email to

export@cisco.com.

 

License Level: Ipbase

License Type: Permanent

Next reload license Level: Ipbase

 

cisco WS-C3850-24P (MIPS) processor with 4194304K bytes of physical memory.

Processor board ID FOC2012U0LV

18 Virtual Ethernet interfaces

168 Gigabit Ethernet interfaces

24 Ten Gigabit Ethernet interfaces

2048K bytes of non-volatile configuration memory.

4194304K bytes of physical memory.

250456K bytes of Crash Files at crashinfo:.

250456K bytes of Crash Files at crashinfo-2:.

250456K bytes of Crash Files at crashinfo-3:.

250456K bytes of Crash Files at crashinfo-4:.

252000K bytes of Crash Files at crashinfo-5:.

252000K bytes of Crash Files at crashinfo-6:.

1609272K bytes of Flash at flash:.

1609272K bytes of Flash at flash-2:.

1609272K bytes of Flash at flash-3:.

1609272K bytes of Flash at flash-4:.

1611414K bytes of Flash at flash-5:.

1611414K bytes of Flash at flash-6:.

0K bytes of Dummy USB Flash at usbflash0:.

0K bytes of Dummy USB Flash at usbflash0-2:.

0K bytes of Dummy USB Flash at usbflash0-3:.

0K bytes of Dummy USB Flash at usbflash0-4:.

0K bytes of Dummy USB Flash at usbflash0-5:.

0K bytes of Dummy USB Flash at usbflash0-6:.

0K bytes of  at webui:.

 

Base Ethernet MAC Address          : 04:2a:e2:3f:77:00

Motherboard Assembly Number        : 73-15805-04

Motherboard Serial Number          : FOC20123AG3

Model Revision Number              : AA0

Motherboard Revision Number        : B0

Model Number                       : WS-C3850-24P

System Serial Number               : FOC2012U0LV

 

 

Switch Ports Model              SW Version        SW Image              Mode   

------ ----- -----              ----------        ----------            ----   

*    1 32    WS-C3850-24P       03.06.06E         cat3k_caa-universalk9 INSTALL

     2 32    WS-C3850-24P       03.06.06E         cat3k_caa-universalk9 INSTALL

     3 32    WS-C3850-24P       03.06.06E         cat3k_caa-universalk9 INSTALL

     4 32    WS-C3850-24T       03.06.06E         cat3k_caa-universalk9 INSTALL

     5 32    WS-C3850-24P       03.06.06E         cat3k_caa-universalk9 INSTALL

     6 32    WS-C3850-24P       03.06.06E         cat3k_caa-universalk9 INSTALL

 

 

Switch 02

---------

Switch uptime                      : 4 weeks, 2 hours, 5 minutes

Base Ethernet MAC Address          : 04:2a:e2:3f:76:00

Motherboard Assembly Number        : 73-15805-04

Motherboard Serial Number          : FOC20123AHM

Model Revision Number              : AA0

Motherboard Revision Number        : B0

Model Number                       : WS-C3850-24P

System Serial Number               : FCW2012C0L6

 

Switch 03

---------

Switch uptime                      : 4 weeks, 2 hours, 6 minutes

Base Ethernet MAC Address          : 04:2a:e2:3f:76:80

Motherboard Assembly Number        : 73-15805-04

Motherboard Serial Number          : FOC20123AT2

Model Revision Number              : AA0

Motherboard Revision Number        : B0

Model Number                       : WS-C3850-24P

System Serial Number               : FOC2012U0LW

 

Switch 04

---------

Switch uptime                      : 4 weeks, 2 hours, 5 minutes

Base Ethernet MAC Address          : 88:90:8d:d8:63:00

Motherboard Assembly Number        : 73-14443-08

Motherboard Serial Number          : FOC1815006Y

Model Revision Number              : S0

Motherboard Revision Number        : A0

Model Number                       : WS-C3850-24T

System Serial Number               : FOC1823U10S

 

Switch 05

---------

Switch uptime                      : 4 weeks, 2 hours, 6 minutes

Base Ethernet MAC Address          : 00:f8:2c:9b:9a:00

Motherboard Assembly Number        : 73-15805-05

Motherboard Serial Number          : FOC22035QYP

Model Revision Number              : AD0

Motherboard Revision Number        : B0

Model Number                       : WS-C3850-24P

System Serial Number               : FCW2204C0VC

 

Switch 06

---------

Switch uptime                      : 4 weeks, 2 hours, 6 minutes

Base Ethernet MAC Address          : 00:f8:2c:9b:97:00

Motherboard Assembly Number        : 73-15805-05

Motherboard Serial Number          : FOC22035QMH

Model Revision Number              : AD0

Motherboard Revision Number        : B0

Model Number                       : WS-C3850-24P

System Serial Number               : FCW2204C0V2

 

Configuration register is 0x102

 

 

 

Note: 

we have an unmanaged 4ports PoE switch that is connected to Gi2/0/15 and throws out PoE messages constantly but I don't think this is related to the current issue as it was in this hardware configuration way before any problems came up, here is the term mon just in case:

 

Feb 26 08:21:24: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/15, changed state to up

Feb 26 08:21:54: %ILPOWER-7-DETECT: Interface Gi2/0/15: Power Device detected: IEEE PD

Feb 26 08:21:57: %ILPOWER-5-IEEE_DISCONNECT: Interface Gi2/0/15: PD removed

Feb 26 08:21:57: %ILPOWER-3-CONTROLLER_PORT_ERR: Controller port error, Interface Gi2/0/15: Power given, but Power Controller does not report Power Good

Feb 26 08:23:31: %ILPOWER-7-DETECT: Interface Gi2/0/15: Power Device detected: IEEE PD

Feb 26 08:23:34: %ILPOWER-5-IEEE_DISCONNECT: Interface Gi2/0/15: PD removed

Feb 26 08:23:34: %ILPOWER-3-CONTROLLER_PORT_ERR: Controller port error, Interface Gi2/0/15: Power given, but Power Controller does not report Power Good

Feb 26 08:23:36: %ILPOWER-7-DETECT: Interface Gi2/0/15: Power Device detected: IEEE PD

Feb 26 08:23:39: %ILPOWER-5-IEEE_DISCONNECT: Interface Gi2/0/15: PD removed

Feb 26 08:23:39: %ILPOWER-3-CONTROLLER_PORT_ERR: Controller port error, Interface Gi2/0/15: Power given, but Power Controller does not report Power Good

 

thanks for your suggestions in advance

 

25 REPLIES 25
Leo L
VIP Community Legend


@479130 wrote:

Feb 26 08:23:39: %ILPOWER-5-IEEE_DISCONNECT: Interface Gi2/0/15: PD removedFeb 26 08:23:39: %ILPOWER-5-IEEE_DISCONNECT: Interface Gi2/0/15: PD removed

Is this one of the ports? 

If yes, post the complete output to the command "sh interface Gi2/0/15 controll". 

 

No, 2/0/15 is unmanaged PoE 4-ports switch

#show interfaces gigabitEthernet 2/0/15 controll

GigabitEthernet2/0/15 is up, line protocol is up (connected)

  Hardware is Gigabit Ethernet, address is 042a.e23f.760f (bia 042a.e23f.760f)

  MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,

     reliability 255/255, txload 1/255, rxload 1/255

  Encapsulation ARPA, loopback not set

  Keepalive set (10 sec)

  Full-duplex, 1000Mb/s, media type is 10/100/1000BaseTX

  input flow-control is off, output flow-control is unsupported

  ARP type: ARPA, ARP Timeout 04:00:00

  Last input 00:06:20, output never, output hang never

  Last clearing of "show interface" counters never

  Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 5062561

  Queueing strategy: fifo

  Output queue: 0/40 (size/max)

  5 minute input rate 30000 bits/sec, 4 packets/sec

  5 minute output rate 36000 bits/sec, 14 packets/sec

     29029458 packets input, 25985163070 bytes, 0 no buffer

     Received 369741 broadcasts (48309 multicasts)

     0 runts, 0 giants, 0 throttles

     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

     0 watchdog, 48309 multicast, 0 pause input

     0 input packets with dribble condition detected

     36787289 packets output, 28952678333 bytes, 0 underruns

     5062561 output errors, 0 collisions, 1 interface resets

     0 unknown protocol drops

     0 babbles, 0 late collision, 0 deferred

     0 lost carrier, 0 no carrier, 0 pause output

     0 output buffer failures, 0 output buffers swapped out

Transmit                  GigabitEthernet2/0/15 Receive                 

  28952678333 Total bytes                25985163070 Total bytes              

     26947533 Unicast frames                28659717 Unicast frames           

  27215681791 Unicast bytes              25895137100 Unicast bytes            

      5822034 Multicast frames                 48309 Multicast frames         

   1224545189 Multicast bytes               15298753 Multicast bytes          

      4017722 Broadcast frames                321432 Broadcast frames         

    512451353 Broadcast bytes               74727217 Broadcast bytes          

            0 System FCS error frames              0 IpgViolation frames      

            0 MacUnderrun frames                   0 MacOverrun frames        

            0 Pause frames                         0 Pause frames             

            0 Cos 0 Pause frames                   0 Cos 0 Pause frames       

            0 Cos 1 Pause frames                   0 Cos 1 Pause frames       

            0 Cos 2 Pause frames                   0 Cos 2 Pause frames       

            0 Cos 3 Pause frames                   0 Cos 3 Pause frames       

            0 Cos 4 Pause frames                   0 Cos 4 Pause frames       

            0 Cos 5 Pause frames                   0 Cos 5 Pause frames       

            0 Cos 6 Pause frames                   0 Cos 6 Pause frames       

            0 Cos 7 Pause frames                   0 Cos 7 Pause frames       

            0 Oam frames                           0 OamProcessed frames      

            0 Oam frames                           0 OamDropped frames        

      9043267 Minimum size frames            6963726 Minimum size frames      

      4285438 65 to 127 byte frames          3692984 65 to 127 byte frames    

      3710326 128 to 255 byte frames          712406 128 to 255 byte frames   

      1744712 256 to 511 byte frames          947491 256 to 511 byte frames   

       732120 512 to 1023 byte frames         619115 512 to 1023 byte frames 

     17271426 1024 to 1518 byte frames      16093736 1024 to 1518 byte frames

            0 1519 to 2047 byte frames             0 1519 to 2047 byte frames

            0 2048 to 4095 byte frames             0 2048 to 4095 byte frames

            0 4096 to 8191 byte frames             0 4096 to 8191 byte frames

            0 8192 to 16383 byte frames             0 8192 to 16383 byte frames

            0 16384 to 32767 byte frame             0 16384 to 32767 byte frame

            0 > 32768 byte frames                  0 > 32768 byte frames      

            0 Late collision frames                0 SymbolErr frames         

      5062561 Excess Defer frames                  0 Collision fragments      

            0 Good (1 coll) frames                 0 ValidUnderSize frames    

            0 Good (>1 coll) frames                0 InvalidOverSize frames   

            0 Deferred frames                      0 ValidOverSize frames     

            0 Gold frames dropped                  0 FcsErr frames            

            0 Gold frames truncated    

            0 Gold frames successful   

            0 1 collision frames       

            0 2 collision frames       

            0 3 collision frames       

            0 4 collision frames       

            0 5 collision frames       

            0 6 collision frames       

            0 7 collision frames       

            0 8 collision frames       

            0 9 collision frames       

            0 10 collision frames      

            0 11 collision frames      

            0 12 collision frames      

            0 13 collision frames      

            0 14 collision frames      

            0 15 collision frames      

            0 Excess collision frames 

 

LAST UPDATE 100 msecs AGO

 

One device that fails to receive PoE is 3/0/15 and it shows not connect at the minute (it's a Cisco AP)

LLSASW01#show interfaces gigabitEthernet 3/0/15 controll

GigabitEthernet3/0/15 is down, line protocol is down (notconnect)

  Hardware is Gigabit Ethernet, address is 042a.e23f.768f (bia 042a.e23f.768f)

  Description: ===> temp AP C20 <===

  MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,

     reliability 255/255, txload 1/255, rxload 1/255

  Encapsulation ARPA, loopback not set

  Keepalive set (10 sec)

  Auto-duplex, Auto-speed, media type is 10/100/1000BaseTX

  input flow-control is off, output flow-control is unsupported

  ARP type: ARPA, ARP Timeout 04:00:00

  Last input never, output never, output hang never

  Last clearing of "show interface" counters never

  Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0

  Queueing strategy: fifo

  Output queue: 0/40 (size/max)

  5 minute input rate 0 bits/sec, 0 packets/sec

  5 minute output rate 0 bits/sec, 0 packets/sec

     0 packets input, 0 bytes, 0 no buffer

     Received 0 broadcasts (0 multicasts)

     0 runts, 0 giants, 0 throttles

     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

     0 watchdog, 0 multicast, 0 pause input

     0 input packets with dribble condition detected

     0 packets output, 0 bytes, 0 underruns

     0 output errors, 0 collisions, 1 interface resets

     0 unknown protocol drops

     0 babbles, 0 late collision, 0 deferred

     0 lost carrier, 0 no carrier, 0 pause output

     0 output buffer failures, 0 output buffers swapped out

Transmit                  GigabitEthernet3/0/15 Receive                 

            0 Total bytes                          0 Total bytes              

            0 Unicast frames                       0 Unicast frames           

            0 Unicast bytes                        0 Unicast bytes            

            0 Multicast frames                     0 Multicast frames         

            0 Multicast bytes                      0 Multicast bytes          

            0 Broadcast frames                     0 Broadcast frames         

            0 Broadcast bytes                      0 Broadcast bytes          

            0 System FCS error frames              0 IpgViolation frames      

            0 MacUnderrun frames                   0 MacOverrun frames        

            0 Pause frames                         0 Pause frames             

            0 Cos 0 Pause frames                   0 Cos 0 Pause frames       

            0 Cos 1 Pause frames                   0 Cos 1 Pause frames       

            0 Cos 2 Pause frames                   0 Cos 2 Pause frames       

            0 Cos 3 Pause frames                   0 Cos 3 Pause frames       

            0 Cos 4 Pause frames                   0 Cos 4 Pause frames       

            0 Cos 5 Pause frames                   0 Cos 5 Pause frames       

            0 Cos 6 Pause frames                   0 Cos 6 Pause frames       

            0 Cos 7 Pause frames                   0 Cos 7 Pause frames       

            0 Oam frames                           0 OamProcessed frames      

            0 Oam frames                           0 OamDropped frames        

            0 Minimum size frames                  0 Minimum size frames      

            0 65 to 127 byte frames                0 65 to 127 byte frames    

            0 128 to 255 byte frames               0 128 to 255 byte frames   

            0 256 to 511 byte frames               0 256 to 511 byte frames   

            0 512 to 1023 byte frames              0 512 to 1023 byte frames 

            0 1024 to 1518 byte frames             0 1024 to 1518 byte frames

            0 1519 to 2047 byte frames             0 1519 to 2047 byte frames

            0 2048 to 4095 byte frames             0 2048 to 4095 byte frames

            0 4096 to 8191 byte frames             0 4096 to 8191 byte frames

            0 8192 to 16383 byte frames             0 8192 to 16383 byte frames

            0 16384 to 32767 byte frame             0 16384 to 32767 byte frame

            0 > 32768 byte frames                  0 > 32768 byte frames      

            0 Late collision frames                0 SymbolErr frames         

            0 Excess Defer frames                  0 Collision fragments      

            0 Good (1 coll) frames                 0 ValidUnderSize frames    

            0 Good (>1 coll) frames                0 InvalidOverSize frames   

            0 Deferred frames                      0 ValidOverSize frames     

            0 Gold frames dropped                  0 FcsErr frames            

            0 Gold frames truncated    

            0 Gold frames successful   

            0 1 collision frames       

            0 2 collision frames       

            0 3 collision frames       

            0 4 collision frames       

            0 5 collision frames       

            0 6 collision frames       

            0 7 collision frames       

            0 8 collision frames       

            0 9 collision frames       

            0 10 collision frames      

            0 11 collision frames      

            0 12 collision frames      

            0 13 collision frames      

            0 14 collision frames      

            0 15 collision frames      

            0 Excess collision frames 

 

LAST UPDATE 2429356970 msecs AGO

 

 

Leo L
VIP Community Legend

No line errors.
Can you do the following:
1. Command: test cable tdr int Gi 2/0/15;
2. Wait for approximately 5 to 7 seconds for the test to run;
3. Command: sh cable tdr int Gi 2/0/15; and
4. Post the output to #3.
Do the same to Gi 3/0/15.
NOTE: I recommend you upgrade the firmware of the switch. I believe you're hitting CSCvb65304.

Does that makes any sense?

pins are shorted? and inverted for PairA,B?

 

#show cable-diagnostics tdr int gig 1/0/5
TDR test last run on: February 26 16:41:28

Interface Speed Local pair Pair length Remote pair Pair status
--------- ----- ---------- ------------------ ----------- --------------------
Gi1/0/5 100M Pair A 0 +/- 1 meters Pair B Normal
Pair B 0 +/- 1 meters Pair A Normal
Pair C 63 +/- 1 meters N/A Short
Pair D 65 +/- 1 meters N/A Short

 

#test cable-diagnostics tdr int gig 2/0/15
TDR test started on interface Gi2/0/15
A TDR test can take a few seconds to run on an interface
Use 'show cable-diagnostics tdr' to read the TDR results.

 

#show cable-diagnostics tdr int gig 2/0/15
TDR test last run on: February 26 16:43:35

Interface Speed Local pair Pair length Remote pair Pair status
--------- ----- ---------- ------------------ ----------- --------------------
Gi2/0/15 1000M Pair A 50 +/- 10 meters Pair A Normal
Pair B 50 +/- 10 meters Pair B Normal
Pair C 50 +/- 10 meters Pair C Normal
Pair D 50 +/- 10 meters Pair D Normal

 

Leo L
VIP Community Legend

Short at 63 metres. That means the cable nearest the client (or furthest away from the switch port) is faulty. Replace that and re-run the test if it still doesn't work.
If the cable has been replaced and the issue persist, then remove the cable and re-run the TDR so we can determine if the punch block is faulty or not.

One important thing:  Notice the TDR result that says Pairs A and B are "Normal" and Pairs C & D are "short"?  This tells me that the cable used was never meant for PoE and will not support GigabitEthernet.  This also means that the cable used was either manually (vs machine molded) terminated or someone picked up a cable from a junk shop.  

For more information about TDR, read How to use Time-Domain Reflectometer (TDR).

Hello Leo, 

thanks for your support.

As you said, we probably have shorts on LAN cable connecting VoIP phone, let's just mark that as faulty cable.

But we recently had other devices going PoE down after creating this ticket, one in particular is a watchdog connected directly to the switch with a cat6 0.5m cable, I wouldn't believe this has a short aswell.

switchport in question is 1/0/1, devices got no PoE for over a week, I wasn't able to grant PoE to it this morning by shut/no shut or physically disconnect and reconnect LAN cable. At the end I have connected a power supply to the device.

I came back few hours later and disconnect power supply from watchdog and now it seems to have PoE granted from switch again. 

What could it be? As said, it's seems that recently we have this behaviour to random switchports.

 

 

Mar 5 12:54:39: %ILPOWER-7-DETECT: Interface Gi5/0/7: Power Device detected: IEEE PD
Mar 5 12:54:42: %ILPOWER-5-IEEE_DISCONNECT: Interface Gi5/0/7: PD removed
Mar 5 12:54:42: %ILPOWER-3-CONTROLLER_PORT_ERR: Controller port error, Interface Gi5/0/7: Power given, but Power Controller does not report Power Good
Mar 5 12:56:32: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet4/0/15, changed state to down
Mar 5 12:56:33: %LINK-3-UPDOWN: Interface GigabitEthernet4/0/15, changed state to down
Mar 5 12:56:50: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet3/0/17, changed state to down
Mar 5 12:56:51: %LINK-3-UPDOWN: Interface GigabitEthernet3/0/17, changed state to down
Mar 5 12:57:11: %ILPOWER-7-DETECT: Interface Gi3/0/23: Power Device detected: IEEE PD
Mar 5 12:57:14: %ILPOWER-5-IEEE_DISCONNECT: Interface Gi3/0/23: PD removed
Mar 5 12:57:14: %ILPOWER-3-CONTROLLER_PORT_ERR: Controller port error, Interface Gi3/0/23: Power given, but Power Controller does not report Power Good
Mar 5 12:57:28: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet5/0/4, changed state to down
Mar 5 12:57:29: %LINK-3-UPDOWN: Interface GigabitEthernet5/0/4, changed state to down
Mar 5 12:57:36: %LINK-3-UPDOWN: Interface GigabitEthernet5/0/4, changed state to up
Mar 5 12:57:37: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet5/0/4, changed state to up
Mar 5 12:58:37: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet5/0/4, changed state to down
Mar 5 12:58:38: %LINK-3-UPDOWN: Interface GigabitEthernet5/0/4, changed state to down
Mar 5 12:59:17: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/1, changed state to down
Mar 5 12:59:18: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/1, changed state to down
Mar 5 12:59:24: %ILPOWER-7-DETECT: Interface Gi1/0/1: Power Device detected: IEEE PD
Mar 5 12:59:25: %ILPOWER-5-POWER_GRANTED: Interface Gi1/0/1: Power granted
Mar 5 12:59:28: %ILPOWER-5-IEEE_DISCONNECT: Interface Gi1/0/1: PD removed
Mar 5 12:59:29: %ILPOWER-7-DETECT: Interface Gi1/0/1: Power Device detected: IEEE PD
Mar 5 12:59:30: %ILPOWER-5-POWER_GRANTED: Interface Gi1/0/1: Power granted
Mar 5 12:59:32: %ILPOWER-5-IEEE_DISCONNECT: Interface Gi1/0/1: PD removed
Mar 5 12:59:33: %ILPOWER-7-DETECT: Interface Gi1/0/1: Power Device detected: IEEE PD
Mar 5 12:59:34: %ILPOWER-5-POWER_GRANTED: Interface Gi1/0/1: Power granted
Mar 5 12:59:36: %ILPOWER-5-IEEE_DISCONNECT: Interface Gi1/0/1: PD removed
Mar 5 12:59:40: %ILPOWER-7-DETECT: Interface Gi1/0/1: Power Device detected: IEEE PD
Mar 5 12:59:41: %ILPOWER-5-POWER_GRANTED: Interface Gi1/0/1: Power granted
Mar 5 12:59:44: %ILPOWER-5-IEEE_DISCONNECT: Interface Gi1/0/1: PD removed
Mar 5 12:59:45: %ILPOWER-7-DETECT: Interface Gi1/0/1: Power Device detected: IEEE PD
Mar 5 12:59:46: %ILPOWER-5-POWER_GRANTED: Interface Gi1/0/1: Power granted
Mar 5 12:59:46: %ILPOWER-5-IEEE_DISCONNECT: Interface Gi1/0/1: PD removed
Mar 5 12:59:46: %ILPOWER-7-DETECT: Interface Gi1/0/1: Power Device detected: IEEE PD
Mar 5 12:59:47: %ILPOWER-5-POWER_GRANTED: Interface Gi1/0/1: Power granted
Mar 5 12:59:51: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/1, changed state to up
Mar 5 12:59:52: %ILPOWER-5-IEEE_DISCONNECT: Interface Gi1/0/1: PD removed
Mar 5 12:59:52: %ILPOWER-7-DETECT: Interface Gi1/0/1: Power Device detected: IEEE PD
Mar 5 12:59:53: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/1, changed state to down
Mar 5 12:59:54: %ILPOWER-5-POWER_GRANTED: Interface Gi1/0/1: Power granted
Mar 5 12:59:56: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/1, changed state to up
Mar 5 12:59:57: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/1, changed state to up

 

 

 

 

 

 

 

 

 

 

 

and switchport 1/0/1 device went down again as no PoE granted

 

 

#test cable-diagnostics tdr interface gigabitEthernet 1/0/1

TDR test started on interface Gi1/0/1

A TDR test can take a few seconds to run on an interface

Use 'show cable-diagnostics tdr' to read the TDR results.

 

#show cable-diagnostics tdr int gig 1/0/1

TDR test last run on: March 05 14:07:55

 

Interface Speed Local pair Pair length        Remote pair Pair status

--------- ----- ---------- ------------------ ----------- --------------------

Gi1/0/1   auto  Pair A     0    +/- 1  meters N/A         Normal              

                Pair B     0    +/- 1  meters N/A         Normal              

                Pair C     1    +/- 1  meters N/A         Short               

                Pair D     1    +/- 1  meters N/A         Short               

 

At this stage it's very unlikely we can have another short

 

I have a 3650 with some 100Mbps PoE devices (IP cameras) and I get a similar output with the TDR test showing a short on pairs C & D however the ports are working fine.

cat-3650#show cable-diagnostics tdr interface gigabitEthernet 1/0/20
TDR test last run on: July 20 11:24:47

Interface Speed Local pair Pair length Remote pair Pair status
--------- ----- ---------- ------------------ ----------- --------------------
Gi1/0/20 100M Pair A 0 +/- 1 meters Pair A Normal
Pair B 0 +/- 1 meters Pair B Normal
Pair C 13 +/- 1 meters N/A Short
Pair D 14 +/- 1 meters N/A Short

I think the PoE device is actually causing this result so is probably nothing to worry about. For 1000Mbps connected ports I get 'normal' on all pairs:

cat-3650#show cable-diagnostics tdr interface gigabitEthernet 1/0/38
TDR test last run on: July 20 11:27:26

Interface Speed Local pair Pair length Remote pair Pair status
--------- ----- ---------- ------------------ ----------- --------------------
Gi1/0/38 1000M Pair A 4 +/- 10 meters Pair B Normal
Pair B 4 +/- 10 meters Pair A Normal
Pair C 4 +/- 10 meters Pair C Normal
Pair D 4 +/- 10 meters Pair D Normal

Try using LLDP instead of CDP.

Any more ideas or suggestions to look at?

appreciated

Hello,

 

the one thing left to try is to upgrade your stack to release Denali-16.3.7 MD (which apparently is the recommended release)...

Thanks for your reply Georg,

I'm not inclined to upgrade if not extremely necessary as this creates downtime.

Fact is I have 3 switchstacks in 3 different offices on exactly same release

 

Office 1: stack of 6 switches 3850

Office 2: stack of 6 switches 3850 -> this is the one with PoE issues

Office 3: stack of 4 switches 3850

they are all on 03.06.06E, and we use similar connected PoE devices to all of them (ex. Cisco APs, Digium D40 VoIP, watchdogs etc) therefore I would exclude it as OS version issue

 

 

Leo L
VIP Community Legend

TDR report shows faulty cable. Distance shows the cable nearest the switch port is faulty.

thanks, I will swap cable and test again port 1/0/1

 

Today we have PoE fault on:

 

Interface Speed Local pair Pair length Remote pair Pair status
--------- ----- ---------- ------------------ ----------- --------------------
Gi1/0/2 auto Pair A 48 +/- 1 meters N/A Open
Pair B 50 +/- 1 meters N/A Open
Pair C 49 +/- 1 meters N/A Open
Pair D 51 +/- 1 meters N/A Open


#show cable-diagnostics tdr interface gigabitEthernet 1/0/7
TDR test last run on: March 12 10:32:52

Interface Speed Local pair Pair length Remote pair Pair status
--------- ----- ---------- ------------------ ----------- --------------------
Gi1/0/7 auto Pair A 64 +/- 1 meters N/A Open
Pair B 65 +/- 1 meters N/A Open
Pair C 63 +/- 1 meters N/A Short
Pair D 65 +/- 1 meters N/A Short


#show cable-diagnostics tdr interface gigabitEthernet 2/0/14
TDR test last run on: March 12 10:32:59

Interface Speed Local pair Pair length Remote pair Pair status
--------- ----- ---------- ------------------ ----------- --------------------
Gi2/0/14 1000M Pair A 50 +/- 10 meters Pair A Normal
Pair B 50 +/- 10 meters Pair B Normal
Pair C 50 +/- 10 meters Pair C Normal
Pair D 50 +/- 10 meters Pair D Normal


#show cable-diagnostics tdr interface gigabitEthernet 3/0/20
TDR test last run on: March 12 10:33:07

Interface Speed Local pair Pair length Remote pair Pair status
--------- ----- ---------- ------------------ ----------- --------------------
Gi3/0/20 1000M Pair A 33 +/- 10 meters Pair B Normal
Pair B 33 +/- 10 meters Pair A Normal
Pair C 33 +/- 10 meters Pair D Normal
Pair D 33 +/- 10 meters Pair C Normal


#show cable-diagnostics tdr interface gigabitEthernet 3/0/23
TDR test last run on: March 12 10:33:11

Interface Speed Local pair Pair length Remote pair Pair status
--------- ----- ---------- ------------------ ----------- --------------------
Gi3/0/23 100M Pair A 0 +/- 1 meters Pair A Normal
Pair B 0 +/- 1 meters Pair B Normal
Pair C 12 +/- 1 meters N/A Short
Pair D 13 +/- 1 meters N/A Short


#show cable-diagnostics tdr interface gigabitEthernet 5/0/7
TDR test last run on: March 12 10:33:17

Interface Speed Local pair Pair length Remote pair Pair status
--------- ----- ---------- ------------------ ----------- --------------------
Gi5/0/7 100M Pair A 0 +/- 1 meters Pair B Normal
Pair B 0 +/- 1 meters Pair A Normal
Pair C 30 +/- 1 meters N/A Short
Pair D 31 +/- 1 meters N/A Short

 

would that indicate we have more cable fault on 1/0/2, 1/0/7, 3/0/23, 5/0/7 ?